20617905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17851}}^1$

素因数の和:17877

約数の個数: 32

約数和(自身を含む): 41131008

約数和(自身を除く): 20513103

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 17851, 53553, 89255, 124957, 196361, 267765, 374871, 589083, 624785, 981805, 1374527, 1874355, 2945415, 4123581, 6872635, 20617905]

約数ペア:

[(1, 20617905), (3, 6872635), (5, 4123581), (7, 2945415), (11, 1874355), (15, 1374527), (21, 981805), (33, 624785), (35, 589083), (55, 374871), (77, 267765), (105, 196361), (165, 124957), (231, 89255), (385, 53553), (1155, 17851)]